16 OCTOBER 1915, Page 22

Some time ago Professor Thiseiton Mark published a critical consideration

of human behaviour from the poilit of view of psychology ; in Factora in Concintoi (T. Fisher Unwin, Ss. 6d. net) he debates the same subject on ethical lines. He begins his study, in flat contradiction to the theories of Berkleyism, with the assertion that reality (which for the purposes of his book he takes to be synonymous with the universe) is inde- pendent of our subjective knowledge of it, and goes on to prove that morality is the conduct which leads to the greatest harmony between reality and the self. The faults of the book are those which are common to almost all work of this kind : there is a tendency to involved sentences which arrive at no very evident goal, and an extravagant love of Latin words. If Pro- fessor Mark had not, by their use, produced a book full of care and interest, we would plead for a holiday for all such words as "personality " and "atmosphere "; for they are sadly over- worked.